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- Python
- JavaScript
- Java
- Rust
- Haskell
- TypeScript
- C#
- R (Beta)
- Scala
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- Julia (Beta)
- Lua
- C
- COBOL (Beta)
- Factor (Beta)
- Go
- D (Beta)
- Groovy
- CoffeeScript
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- Shell
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Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.